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| 1 | 非隔离型模块化多电平DC/DC变换器的最小化桥臂环流控制显示文摘用于中高压直流电压转换和直流电网互联的高压大功率直流变压器一般采用中间交流变压器,存在损耗高和体积大等不足。对一种非隔离型的模块化多电平DC/DC变换器进行了研究,与普通双有源桥式DC/DC变换器相比,避免了交流变压器的存在。首先分析了此变换器的工作原理,建立了变换器的等效数学模型。考虑子模块电容电压存在特殊的不平衡,变换器需要引入交流循环电流,提出了一种保证桥臂功率均衡的最小化桥臂环流的控制策略,减小了桥臂电流的交流分量,降低了变换器的损耗。在Matlab/Simulink中仿真验证了变换器的性能和最小环流控制策略的有效性。最后搭建实验平台进行了实验验证。 | 马文忠 田洪英 刘慧玉 胡范青 李沐书 张奎同 | 2021 | 电力系统保护与控制2021，49，22： | 15 |
| 2 | Study of future power interconnection scheme in ASEAN显示文摘The current energy supply trajectory in the Association of Southeast Asian Nations(ASEAN)region is not sustainable.Factors such as rising standards of living and demographic patterns,including population growth,lead to continuous increase in power demand,which is difficult to meet using limited fossil fuel resources.Thus,a transition toward clean energy sources is needed in the region.While ASEAN member countries are rich in clean energy resources,such resources are located far from demand centers;thus,allocation of clean energy is necessary to increase its utilization.In this study,power demand is forecasted using a combination of prediction methods.A model to evaluate the installed capacity and power exchange potential is proposed to deal with mismatch between the location of the clean energy base and the load center.Furthermore,the concept of cross-regional allocation of clean energy between the ASEAN region,China,and South Asia is presented.A power interconnection scheme among the ASEAN member countries as well as neighboring countries is proposed based on the power exchange potential.The proposed grid interconnection scheme contributes to the utilization of clean energy in the ASEAN region,increasing the proportion of clean energy in the generation mix,which ensures that the region becomes a sustainable and resilient society with a clean and low carbon development route.Furthermore,the proposed power interconnection scheme will generate valuable economic,social,environmental,and resource allocation benefits. | Han Jiang Yi Gao Pengfei Xu Jun Li | 2019 | Global Energy Interconnection2019，2，6： | 1 |
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